BQ7790502PW

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Power Management Integrated Circuits (PMICs) regulate the power supply and signal paths between an electrical power source or batteries and the processor and peripherals in the system. Battery Management is the specific type of PMIC dedicated to power management of batteries or other energy source.

Battery Management, involves monitoring the battery status, charging, discharging and protecting it from damage. This can be done manually or via specialized ICs, such as the BQ7790502PW. This particular IC is an integrated battery monitoring, protection, and management system IC with an integrated isolated FET.

The BQ7790502PW is designed to protect rechargeable cells and battery packs up to 15V and 28A while providing multiple functions and features, including: Overvoltage Protection, Overdischarge Protection, Overcharge Protection, Undervoltage Protection, Temperature Protection, Short Circuit Protection and Voltage Balancing. The IC also offers voltage and temperature measurement and programmable alarms, configurable via I2C interface, including override capability for electronic systems.

The working principle of the BQ7790502PW is based on a regulated input supply for monitoring and fault protection, with protection circuitry comprising independent shunt elements, isolation transistors, comparators and analog/digital signal processing components. A voltage reference level is used to compare the monitored cell voltage with a set point and compare the cell temperature with a thermal set point. Then a regulator voltage is used for the supply voltage, a regulator voltage is used for the shunt voltage, and a fourth regulator voltage is used from the output of the current source.

The BQ7790502PW has a wide range of applications in various portable devices, such as digital camera batteries, laptop batteries, cordless phone batteries, power tool batteries and other consumer products. The IC supports operation on a variety of battery chemistries, including Lithium Ion (Li-Ion), Lithium Polymer (Li-Po), Nickel Metal Hydride (NiMH), and Nickel Cadmium (Ni-Cd). The IC monitors the battery charge level and temperature in real-time, providing accurate monitoring and management of power supply and battery life.

In addition, the BQ7790502PW is highly scalable, allowing a variety of combinations to be configured. For example, the IC can be set up to support up to eight battery packs, four isolated channels per pack, and can be used for cell balancing as well as for multiplex monitoring. This makes the IC suitable for multi-cell battery packs that require monitoring and maintenance of both individual cells and the entire battery pack.

In conclusion, the BQ7790502PW is a highly advanced battery management IC that can provide advanced monitoring and protection features as well as real-time data monitoring and management for a variety of applications. The IC is capable of monitoring and protecting up to 15V and 28A, with a variety of settings that can be configured for the specific requirements of each application. In addition, the IC offers voltage and temperature measurement and programmable alarms, support for a variety of battery chemistries and is highly scalable for a variety of battery pack configurations.

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